[Openstack-stable-maint] Stable check of openstack/oslo.service for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/83fc2bfd6f414b78b7260c94920bec... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8a1a50e26fb24cf9bafc590ca797b4c3 : SUCCESS in 3m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fc5cfd34f554405f9d1c4db98cb6009c : FAILURE in 3m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/89c2073c8fe3494fb566efcdffd7748c : SUCCESS in 3m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7f084c70fd734135bfc8f25fa90e06e2 : SUCCESS in 4m 14s